Light, which travels at a speed of 300,000 km/sec in a vacuum, can be slowed down and even stopped completely by methods that involve trapping the light inside crystals or ultracold clouds of atoms. Now in a new study, researchers ...
Since the 17th century, when Isaac Newton and Christiaan Huygens first debated the nature of light, scientists have been puzzling over whether light is best viewed as a wave or a particle—or perhaps, at the quantum level, ...
Optics & Photonics
Aug 21, 2023
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3832
(PhysOrg.com) -- For more than 40 years, scientists have been using the radiation pressure of light to move and manipulate small objects in space. But until now, the movements have always been restricted to very small scales, ...
The solar system has eight planets. In 2006, astronomers reclassified Pluto as a dwarf planet, the same class that contains Eris, Sedna, Quaoar, Ceres and perhaps many more solar system small bodies. These are defined approximately ...
Astronomy
Mar 14, 2022
5
815
Visible light is extremely important in nature. Seen by the human eye, it is the most intense light emitted by the sun to reach the earth's surface and is an essential element for fundamental biological processes underlying ...
Optics & Photonics
Oct 29, 2021
0
895
Hubble offers a special view of the double star system Eta Carinae's expanding gases glowing in red, white, and blue. This is the highest resolution image of Eta Carinae taken by the NASA/ESA Hubble Space Telescope.
Astronomy
Jul 1, 2019
2
3
Researchers have generated a wide range of colors from a single laser after discovering a new process for achieving so-called "supercontinuum generation."
Optics & Photonics
Mar 9, 2020
2
3249
A recent study published in Open Biology reports that exposure to intense light almost instantly provokes courtship behavior in male fruit flies (Drosophila). Surprisingly, the researchers observed both male-male and male-female ...
(PhysOrg.com) -- Researchers studying the eyes of different Australian bull ants have found the first evidence of adaptation of visual structures within a single species to distinct light intensities.
Plants & Animals
Oct 6, 2010
4
0
In a recent experiment at the University of Nebraska–Lincoln, plasma electrons in the paths of intense laser light pulses were almost instantly accelerated close to the speed of light.
Optics & Photonics
Sep 14, 2018
6
541
